Telegraphic instrument.



No. 678,394. Patented luly l6, IBM. J. J. GHEGAN. TELEGRAPH") INSTRUMENT.

(Application filed Feb. 26, 1900.

(No Model.)

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JOHN J. GHEGAN, OF NEWARK, NEW JERSEY, ASSIGNOR TO J. II. BUNNELL & COMPANY, OF NEW YORK.

TELEGRAPl-HC INSTRUMENT.

SPECIFICATION forming part of Letters Patent No. 678,894, dated July 16, 1901. Application filed I'ebruai y 26, 1900. herial No. 6,517. (No model.)

To LLZZ whom it may concern:

Be it known that I, JOHN J. GHEGAN, a citizen of the United States, and a resident of the city of Newark, Essex county, New J ersey, have invented certain new and useful Improvements in Telegraph Sounders, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to telegraph-sounders; and the object thereof is to provide means for adjusting the operating position of the armature, so as to increase or diminish the distance between the same and the poles of the magnet by which the armature is actuated to itllow for varying current conditions on the In the accompanying drawings, Figure 1 is a side elevation of a sounder embodying my invention. Fig. 2 is a plan view thereof. Fig. 3 is a rear end view thereof. Fig. 4; is a vertical section on the line 4 4, Fig. 1; and Fig. 5 is a horizontal section on the line 5 5, Fig. 3.

Similar reference characters are employed to designate corresponding parts in all the Views.

The instrument which I have illustrated and will now describe as embodying my said invention in one of its preferred forms is a sounder of the usual type comprising an electromagnet A, an anvil B, and standards or uprights G, which support, as hereinafter described, the armature-lever D, all mounted upon a plate E, preferably of metal, secured to the base E, which also carries the usual binding-posts, and the instrument is provided with the usual upper and lower contact-screws F and G. The armature-lever D is pivotally mounted in carriage H, which, as shown, is in the form of a yoke, by set-screws cl, which form bearings for the axis of the armature-lever. The uprights 0 rise vertically from the plate E and are rigidly secured thereto. Upon the inner sides of the uprights O are formed vertical grooves which receive splines h, formed on the carriage H, so that the latter may by means of suitable mechanism be raised and lowered relatively to the uprights which form vertical guides for the armature-carriage, thus increasing or diminishing the distance betweenthe armature and the magnet-poles. The specific means which I have shown for effecting this vertical adjustment of the armature-lever comprise a screwthreaded shaft I, operated by the milled head 2', which is mounted in the standards 0 below the carriage H. A screw-threaded traveling lock J is carried by the shaft I, its lower flat surface resting lightly upon or being closely adjacent to the surface of the plate E, so as to prevent the block from turning with the shaft. The block J is provided with an up? wardly extending flange or projection in which is formed an inclined recess The lower ends of the carriage H are connected by a cross-bar K, which carries a pin or roller 76, Figs. 4, and 5, which projects into the recess j. It will now be apparent that when the operating conditions require an increase in the distance between the armature and the poles of the magnet this result can be quickly and positively accomplished by turning the shaft I to the right, whereby the block J, carrying the inclined slotj, will be drawn toward the head t'. This movement of the slot j will lift the pin 70, thereby lifting the carriage H and the armature-lever, this movement being accomplished by the Wedging action of the under side of the slot on the pin. By turning the shaft I to the left the slot will be moved in the reverse direction, thereby causing the carriage and armature to descend by the action of the upper surface of the slot on the pin 70. The free end of the armature-lever is held in contact against the screw F by the tension-spring L.

It is to be understood that I do not intend to limit myself to the particular form, construction, or arrangement of parts herein shown and described, since it is obvious that the vertical adjustment of the armature-carriage relatively to the uprights which support it may be effected in various ways and various known equivalents may be employed for the mechanism which I have illustrated as performing that particular function.

Having thus shown and described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a sounder, the combination of a baseplate, an electromagnet rigidly connected thereto in a vertical position, a pivoted armature-lever, an armature carried thereby, a movable carriage in which the armaturelever is pivoted, vertical guides rigidly connected to the base-plate at each side of the armature-lever carriage, means for holding the armature-lever carriage in sliding engagement with said guides and means for raising and lowering the armature-lever carriage on said guides, substantially as shown and described.

2. In a telegraphic instrument the combination of an armature, a pivoted armaturelever, an electromagnet, a movable carriage for the bearings of the armature-lever, an adjustable cam for moving said carriage and means for actuating said cam, substantially as shown and described.

3. In a telegraphic instrument the combination of an armature, a pivoted armaturelever, an electromagnet, a movable carriage for the bearings of the armature-lever, a camsurface and a cooperating element working thereon and means for relatively actuating said surface and element to vary the position of said carriage, substantially as shown and described.

4. In a telegraphic instrument the combination of an armature, a pivoted armaturelever, an electromagnet, a movable carriage for the bearings of the armature-lever, a cam and a cooperating element working thereon and an adjusting-screw for relatively actuating said cam and element to vary the position of said carriage, substantially as shown and described.

5. In a telegraphic instrument the combination of an armature, a pivoted armaturelever, an electromagnet, a movable carriage for the bearings of the armature-lever, an adjustable block carrying a cam-surface e0- acting with said support and means for adjusting said block to vary the distance between the armature and magnet, substantially as shown and described.

6. In a telegraphic instrument the combination of an armature, a pivoted armaturelever, an electromagnct, a movable carriage for the bearings of the armature-lever, an adjustable block provided with an inclined slot, a projection on said carriage engaging said slot and an adjusting-screw for actuating said block, substantially as shown and described.

JOHN .T. GII'IEGAN.

lVitnesses:

' S. G. MEfIFCALF,

CHAS. A. I\'IURIT:IEY. 

